Machine for sawing metal.



NO. 864,424 PATENTED AUG. 27, 1007.

o. A. JUENGST.

MACHINE FOR SAWING METAL.

APPLICATION FILED JUNE4,190-1.

QSHEBTS-SHBET l Q PATENTED AUG. 27, 1907. 0, A. JUENGST. MACHINE FOR SAWING METAL APPLICATION FILED JUNE 4, 1904 WIHIIIII'II [lllllll UNITED l STATES PATENT" maiden,

CHARLESA. .TUENGST, OF OROTON FALLS, NEW YORK,

ASSIGNOR TO HIGLEY MACHINE COMPANY, OF OROTON FALLS, NEW YORK, A CORPORATION OF NEW YORK.

MACHINE FOR SAWING mTAL.

Patented Aug. 27, 1907.

Application filed June 4,1904. Serial No. 211,106.

To e ll whom it may concern:

Beit known that I, CHARLES A. JIJENos'r, a citizen ablefrictional feed for progressively advancing the saw through the work.

v I employ i1 combination with suitable devices of a well known construction'for rotating the saw and for swinging the saw frame and saw, a manually operated device adapted to be held as set and which actuates a longitudinally moyable feed shaft and applies a regulatablefrictional pressure to contactingsurfaees in pro-' portion to the effort demanded of the saw in the execut'ionof its work, and which device is adapted to yield under sudden and excessive tension to.prevent injury to the saw.

I .Inthe drawing Figure 1 is a vertical approximately central section longitudinally of the frame and parts of the machine. Fig. 2 is a sectional plan about on the line of the axis of the saw. Fig. 3 is a longitudinal section through the adjustable frictional feed devices. Fig. 4 is a side elevation at the end of the saw frame and 3 part of the feed devices and Fig. 5 is a transverse section at the dotted line at a: of Fig. 3. Figs. 3 and 5 are in larger size for, clearness.

I have not herein shown or described the devices upon the bed of the machine for holding the work as clampedpr for feeding thosame along progressively to the saw, as the same form no part of my present invention and may he of any'dcsircd construction or character.

The frame a of the machine comprises sides, ends and a top or-bodn At one end of this frame there are bearings 2 for a power shaft -b and a recess 3 in the end througlrwhich gears extend and mesh. On this power shaftb there is a pinion b and adjacent to the end of this shaft there is a pulley b and a clutch lever structurc 1); adapted to operate the pulley and suitable deviccs usually employed in this art for coupling up the power shaft 1: with a prime mover. I employ a gear 0 in mesh with the pinion b and sccilrcd upon a shaft (I which passes across through the machine in suitable bearings provided therefor. On this shaft (1 is a gear 0 in mcsh with iii-3 m on a shaft (1 located above the shaft 1 in a plauc pamllel therewith. and also in suitable hcariugsin the frame of thc machine. Surrounding this shaft (1 on ouc end and in uneof the said bearings is a bcariugslccvo a, one end of which sleeve is threaded for a nut 4 which holds the sleeve in its position in the hearing. The saw frame f is connected to and mountcd upon this'bearing sleeve e, and is adapted to swing thereon.

On the end of the shaft d there is a bevel pinion g meshing with a bevel wheel 9 outhe shaft h. This shaft h is in suitable bearings 5 & f the saw frame, and

the saw i is mounted upon an arbor i in a bearing 7 of the saw frame. Upon the end of the shaft it there is a sprocket g, the teeth of which engage the apertures of the saw for revolving the same. The edge of the saw frame f distant from its connection with the shaft (1 is provided with a tooth segment f covered and protected by a case f 2 secured to the frame of the machine; and a shaft it passes through suitable bearings of the frame of the machine in the end opposite to the portioncontaining the shafts d d. Upon this shaft 7c there is a pinion h in mesh with the tooth segment f of the saw frame, and a hub h on the outer end which hub is provided with a handle h by which the shaft may be rotated with. the pinion h so as to raise the saw and the saw frame up to the work. On the shaft is there is also a worm wheel k, and a hub k on the opposite end, to which hub is coiinected one end of the chain 8. v

111 a bearing 9 in the frame of the machine there is a short shaft l on the outer end of which is a handle I to which is secured the other end of the chain8, while on the inner end of the shaft l there is a hook device 1 I employ a bridge frame with a central longitudinal portion m and a yoke end m. This is preferablyan integral struction, the central portion having bearings for a shaft 'n and the yoke endhaving bearings for a short shaft 10, the respective ends of which shaft are in bearings in the machine frame. In connection with this bridge frame I cmploy'a spring m secured to the yoke portion of said frame at one end and at its other end adapted to bear upon a bracket a of the machine frame, said spring and bracket normally supporting said bridge frame in an elevated position. On the short shaft 10 there is a gear 11 meshing with the gear a and a bevel pinion 12. On one end of the shaft 71. there is ahollow bevel wheel 13, while on the opposite end of said shaft there is a worm is adapted when the shaft n is deprcssed to mesh with the worm wheel is upon the shaft h and this shaft 1L preferably terminates in a handle 11?. The end of the shaft n adjacent to the hollow bevel wheel 13 is reduced and threaded, and firmly connected to this threaded end of the shaft is a friction disk 11. agreeing in dimensions with the inner surface of the bevel wheel 13 and l prcfer to employ a disk 14 of leather or other suitable material coming between the juxtaposed surfaces of the friction disk 1i and bcvcl wheel 13.

The parts hcrcinbefore enumerated and described generally have, most of thcni, becu heretofore employed in similar machines in this art.

The power for reediug the saw as rotated into and through the work to be cut is supplied from the power shaft b through the gears 'b andc, shaft d, gears c c and shaft d to the gear 11, bevel pinion l2, bevel wheel 13 and from this bevel wheel through the friction disk '11 to the shaft n. In proportion to the frictional contact there is in evidence between the friction disk 7; and the inner surface of the bevel wheel 13 the rotation of the shaft is by these devices actuates the worm P, the worm Wheel shaft It, pinion hand tooth segment f to raise the saw frame and saw, so that it may move progressively through the work, and for the purpose of engaging the worm is with the worm wheel k, the handle n is'grasped by the operator to depress the bridge frame against the action of the spring m and when this frame is thus depressed, the handle I is raised to bring the hook 1 into engagement with a pin 15 on one side of the bridge frame (seoFig. 3) so as to hold down this frame and keep the worm and worm wheel in engagement.

' vided with trunnions 16 on opposite sides. Between these sleeves and surrounding the shaft n there is an intervening anti friction ball bearing 17. The yoke frame 1' shown in elevation Fig. 5 is at its upper free ends pivotally mounted upon thebridge frame by a pin 18, and is adapted to swing upon said pin. This yoke fram'e is provided with shoulders r coming below the trunions 16, thereby preventing the loose sleeve a turning upon the shaft n. At the lower end of the yoke frame there is a hook rod 20 which passes through the yoke frame and is provided with an adjusting nut 22. A spring 5 is at one end connected to the hook, rod 20, and at its other end to a second hook rod 21. A lever t is connected by a pivot 23 to a bracket secured to the end of the frame of the machine, the hook rod 21 being pivotally connected to the lever i. To this lever t is pivotally connected'a pawl t I adapted to engage the teeth of the segment'racklt, which rack is secured to one side of the gear case a of the machine, and which case covers the worm wheel is. A rod 25 is connected at one end to the pawl t and at its other and upper end to the hand grip device 24 pivoted to the upper end of the lever, which, at the upper end of the lever, has a small spring for keeping the handle of the lever and the hand grip separated. 3

The operation of feeding the saw to and through the work is as follows, bearing in mind the fact that the hollow bevel wheel 13 is loose upon the shaft n'while positively in engagement and mesh with' the bevel pinion 12 connected to the gear 11, and the further fact that the gears c and l1,'the bevel pinion l2 and the bevel wheel 13 are continuously running.-- The hand of the operator engages the handle h turns the shaft is and the pinion hf to raise the tooth segment f the saw frame and saw up to the work, after which the operator moves down the bridge frame and connects the same the friction disk n into forcible contact with the bevel wheel 13, thus causingthe rotation of the bevel wheel 13 to be communicatedthrough the friction disk 11.

tothe shaft n by the shaft n to the worm W, from the worm k to the worm wheel is, the shaft k, pinion h and segment f to progressively continue the swinging movement of the saw frame and saw, advancing the saw into the work. The friction applied by this movement ofthe lever t between the surfaces of the bevel wheel 13 and friction disk 12/ is regulatable and may be increased at the pleasure of the operator in propor tion as the spring 3 is put under tension by the outward movement of the lever t, said lever being held to the position which is drawn by the pawl t thereof engaging v the segment rack. The application of this holding friction is to be governed entirely by the character of the work to be cut and whether the metal is hard or soft, 'because the softer the metal the less frictional contact will be required to drive the saw, and necessarily the harder the metal, the greater frictional contact will be required to drive the saw and force the same through the metal, and it will be apparent that the hand grip 24 may be operated at a moments notice to release the pawl t and simultaneously move in the lever t towards the frame of the machine and relieve or entirely disconnect this friction.-

The chain 8 is employed as inmachines heretofore devised by me in this art for automatically disconnecting the parts at the end of the saw cut, because, .as the shaft k is turned, the chain 8 is wound upon the shaft and its slack taken up, and at the time that the slack' is entirely taken.up it will .draw ddwn the handle '72 and swing the latch device 1 on the shaft ldisengaging the same from, the pin 15, at the moment offwhich disengagement the spring in will come in jyl'v deuce to' raise the bridge frame m m and separate tlie worm Ir:

from the worm wheel is and consequently stop the feed movement. The operative length of the chain 8 can be adjusted according to the extent of the cut to be made by the saw through the work.

his

'I provide a set-screw 19 in the upper part of the br dge frame m, in adapted when the bridge-frame is raised to come up againstthe under surface of the ,machine frame to'lim'it the upward movement of the bridge frame so as to adjustably insure ,the full separation of the worm k from the worm-wheel k.

The devices'herein described are adapted to yield.

speed of rotation of the shaft k and worm-wheel k against the forward motion or advancing action of the shaft 11 and worm It in which the said shaft 11, and worm 76- travel faster than the worm-wheel kis driven, causing a backward or unscrewing movement to the shaft n, against the tension of the spring a, consequently a separation of the friction surfaces of the wheel 13 andq' 2. In a feed mechanism including acarriagc. a iongi tudiually movable shaft aml a worm secured thereto. suitabie devices connecting the worm with the said carriage, a pivoted frame in which the shaft is journaled and longitudlnally slidahle, by which it is supported. a gear loose on the shaft and bearing against the frame. driving gear in mesh with said loose gear, a friction clutch element secured to the shaft and arranged to engage one face of the loose gear and a tension deviec arranged to. hold the 'last named elements in engagement.

3. In a machinefor sawing metal, the combination with a revoiahlc and longitudinally movable shaft, means fol-rotating the saw with the latter means, a longitudinally movable and frictional device upon the revolubie shaft connecting the same with the devices supplying power, a manually operated lever device, means for holding the same in position as set, and means operated thereby for longitudinally moving siiid shaft.

4. in ai machine for sawing metal, the combination with a rcvoiuble and longitudinally movable shaft, a saw frame. a saw, and means fol-swinging the saw frame and saw, of ddvices including a frictional contact. a shaft and other co-ielat-ed devices connecting the revoiuble shaft with the {means for swinging the saw frame and saw, a swinging yoke framc a pivoted hand operated lever, a yielding connection between the lever and the free end of the yokc frame, means for holding the hand lever in the position to which it is moved and means associated with the yoke frame and said shaft for imparting to the shaft a longitudinal movement with the movement of said baud lever. V

5. in a machine for sawing metal, the combination with a revolnbie and longitudinally movable shaft, a saw frame, a saw and means for swinging the sawframe and saw, of devices including a frictional contact, a shaft and other co-reiatcd devices connecting means for swinging the saw frame arid saw, a swinging yoke frame, a pivoted hand operated lever, a yielding connection between the lever and the free end of the yoke frame. means for holding the hand lever in the position to which it is moved, a fast and loose sleeve upon said latter shaft, au'anti friction ball bearing between the sleeves, trunnions upon the loose sleeve, shoulders upon the yoke frame coining beneath the trunnions, whereby with the movement of the hand lever and the yoke frame pressure is applied by the loose sleeve and ball hearings to the fast sleeve to move said shaft longitudinally and apply the necessary operative friction. i

ii. In a machine for sawing metal, the combination with a bridge frame comprising a central longitudinal portion and a yoke'portionfof a shaft upon which the bridge frame is mounted, a shift a the bridge frame, gears and friction devices for rotating said shaft, a yoke frame r pivoted to the bridge frame,- ,shonid'ers 1" upon said yoke frame. a hand lever t', a spring aud.hook rods connecting and extending between the free and. of the yoke, frame and the hand lover, a pawl device and segiuentgear for locking the hand lever in position.

a fast sleeve .0 and n looso-sleeve-o' upon the shaft fl;

trunnion: 16 upon the loose sleeve oflconiing above-the shoulder! r of the yok'o frame and a hail bearing'surreund- I log the shaft n'betweenthe two sleeves, substantially as spe'ciiied.-

T. ina machine for sowing metal,

hub upon the shaft Ir, a shaft 1,

and means for swinging the saw frame and saw, of devices connecting the revolabie shaft the revolubieshaft with the I an iuclosing frame, a

.of said frame, a hook mounted frame, and a handle also on side the frame for swinging said shaft and moving the passing longitudinally through is johmied,

the combination with a rovolnble shaft. of a hrh a frame with longitudinal bearings theroinfor said slut L ,means for pivoting sold frame to the frame of the machine, a worm k on the free end of said shaft, a shaft is placed transversely to the aforesaid shaft and a with which the worm k may be brought into mesh, a

mounted upon said shaft, a pin 15 on the bridge frame 1 adapted to be engaged by said hook, and a chain8 connectlng the aforesaid handle with the hub on the shaft k.

8-. in a machine for sawing metal, the combination with a revoluble shaft, of a bridge frame with longitudinal bearings therein for said shaft, means for pivoting said frame to the frame of the machine, a worm is on the free end of said longitudinally movable shaftya shaft is placed transversely to the aforesaid shaft, :1 worm-wheel k on said shaft with which the worm k may be brought into mesh. a pinion h" on the shaft 70, a hub h and handle h also on the some shaft, 9. toothed segment f meshing with the pinion I!" and a saw frame f supporting the saw and conuerted to said toothed-segment said parts operating to initially and then progressively move the saw frame and saw.

ii. In a machine for sawing metal, the combination with a longitudinally movable shaft, a. clutch operatlveiy efi'ected thereby, and a bridge frame having central longi- -tadluai bearings in which said shaft is jonrnaled, of a yoke frame 1' and pivot 18 connecting the same with said bridge frame, a lever t pivoted to the frame of the machine, a tension spring a, and means connecting the same to the lever and yoke frame, and a device for locking the said lever in the position to which it may placed.

10. In a machine for sawing metal, the combination with a longitudinally movable shaft, a clutch operativeiy effected thereby, and a bridge frame having central longitudinal hearings in which said shaft is journaled, of a yoke frame r and pivot 18 connecting the same with said bridge frame. a lever t pivoted to the frame of the machine, a tension spring .9, ineans connecting the same to the lever and yoke frame, a segment rack it connected to the f -ame of the machine, a pawl pivoted to the said lever,

st spring actuated hand grip and a rod therefrom to said pawl, substantially as set forth.

'il. in a'metal sawing machine, the combination with frame in which said shaft is journaied, of a pin on the side of said swinging frame, a shaft jou'rnaied in the frame of the machine and extending within and outside on said shaft within the frame for engaging said pin and holding down the pivoted the journaled shaft and outhook away from engagement with the pin. r

12. In a metal sawing machine, the'combination with nshaft and a pivotedswinglng n journaled, of a pin on .the side of said frame, a shaft journaied in the frame of the machine, a hook for engaging said pin and holding down the pivoted frame, a handle on and a-chain at its ends connected respectively to the said handle and collar.

1:2..1 a mono sawi'ng machine, the combination with a shift and pivoted swinging frame in which said'shaft of h bracket a on the frame of the machine, aspriug m? secured at one end to the said swinging frame wormwheel k on said shaftahandie and a hook,

frame in which said shaft be manually shaft and inclosed pivoted swinging for moving-tho hook, a. shaft 1:. an adjustable collar thereand at its other end resting on said bracket, to maintain Witnesses:

Goo. T. PINCli-NIY. S. '1. HAVILAND. 

